According to the release, LEED, widely considered the most prominent green building rating system in the country, is made up of a series of credits for things like the use of daylight, on-site renewable energy generation and construction waste management.

The program, launched as a free beta version until it will have a subscription charge in October, has guidance for the five recently launched LEED 2009 rating divisions: New Construction; Core & Shell; Schools; Commercial Interiors; and Existing Buildings, the story noted.

The U.S. Green Building Council (USGBC) plans to provide links to LEEDuser on its website as a support tool for designers, the story added.